[felixgallo]

literally quoting from that meta-analysis, which does not include many clinical trials that have demonstrated an impact:

"Key messages We are uncertain whether wearing masks or N95/P2 respirators helps to slow the spread of respiratory viruses based on the studies we assessed."

Example very large study published in a reputable journal: https://www.science.org/doi/10.1126/science.abi9069?cookieSe...

[ggdG]

>literally quoting from that meta-analysis, which does not include many clinical trials that have demonstrated an impact:

Yes. To their credit, they only looked at randomized controlled trials.

>"Key messages We are uncertain whether wearing masks or N95/P2 respirators helps to slow the spread of respiratory viruses based on the studies we assessed."

In other words: the RCTs don't show an effect to a significant degree.

[felixgallo]

no, it literally says that they do not have a conclusion. You are trying to read it differently because you have an agenda. Please do science instead.